no longer using stemcell-based warden root FS; warden must bring its own
Validation error message improvements.
Error if latest alias is used when no releases are found on director.

Because of release name mismatches, manifests with an empty version
were being uploaded to the director and causing validation errors
during deployment.
When a task fails tell the user how to get more detail.
Merge pull request #153 from mmb/validator_errors

Validation error message improvements.
Merge pull request #154 from mmb/latest_missing

Error if latest alias is used when no releases are found on director.
Merge pull request #155 from mmb/error_debug

When a task fails tell the user how to get more detail.
Removed extraneous bundle exec in bootstrap AWS causing build failures
As per examples, AWS CPI takes default_security_groups (plural)
Upgrade fog gem to v1.11.1
[#48749497] Set CANDIDATE_BUILD_NUMBER for later builds in the chain and update the BOSH version number before building stemcells
[finishes #48749497] - ci stemcell tasks to support build pipeline
Merge pull request #157 from cloudfoundry/bump_fog_gem

Upgrade fog gem to v1.11.1
use new pipeline stemcell builds for jenkins
switch ci publish gems to use the gem from the pipeline build bucket
add parallel_tests gem to ci_build_with_candidate_gems
Clean director snapshoting and added snapshot deployment

[#46837175]
Added Director schedule with snapshot deployments task

- Uses rufus scheduler for defining scheduled tasks
- Can be set in the director.yml as scheduled_jobs array

[#46837175]
Fix user logging for create stemcell and delete deployment tasks
Ensure scheduler properly handles no scheduled jobs

[#46837175]